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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Name : wcrtomb.cpp
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// Part of : MRT LIBC
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// Contains the source for the wcrtomb API implementation.
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// Version :
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//
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#include <e32std.h>
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#include <utf.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <stdio.h>
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#include "wcharcnv.h"
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#if (defined(__SYMBIAN32__) && (defined(__WINSCW__) || defined(__WINS__)))
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#include "libc_wsd_defs.h"
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#endif
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#ifdef EMULATOR
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GET_STATIC_VAR_FROM_TLS(wcrtomb_mbs, mbstate_t)
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#define mbs (*GET_WSD_VAR_NAME(wcrtomb_mbs, s)())
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#endif //EMULATOR
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//-----------------------------------------------------------------------------
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//Function Name : size_t wcrtomb (char * mbchar, wchar_t wc, mbstate_t* ps)
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//Description : Converts a wide character to a multibyte character
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//Return Value : return If mbchar is null, the return value is true (non-zero)
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//if multibyte characters have state-dependent encodings, or false (zero)
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//if they do not.
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//-----------------------------------------------------------------------------
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extern "C" {
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EXPORT_C size_t wcrtomb (char * mbchar, wchar_t wc, mbstate_t* ps)
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{
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#ifndef EMULATOR
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static mbstate_t mbs;
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#endif //EMULATOR
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if (ps == NULL)
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ps = &mbs;
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mbstate_t *state = NULL;
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if(ps)
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{
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state = ps;
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}
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else
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{
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state = &mbs;
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}
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if (mbchar)
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{
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//deal with the special null character case
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if (L'\0' == wc)
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{
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*mbchar = '\0';
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if ( state )
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{
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memset(state,0,sizeof(state));
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state->__count = _EUTF16InitialState;
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}
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return (1);
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}
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//return value of 0 is possible if the first half of a surrogate pair seen
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//crash is possible if mbchar is not at least MB_CUR_MAX bytes long
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return _Utf16ToUtf8(mbchar,wc, state,MB_CUR_MAX);
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}
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//calling with a null dest string is used to initialise shift state
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//effect is exactly as if internal dst buffer was used.
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//therefore we always return 1.
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else
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{
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if ( state )
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{
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memset(state,0,sizeof(state));
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state->__count = _EUTF16InitialState;
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}
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return (1);
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}
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} //end of function
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} //extern "C"
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